Patents by Inventor Ji-Seong Han

Ji-Seong Han has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240030490
    Abstract: The present invention relates to an electrolyte solution and a secondary battery including the same. According to the present invention, the present invention has an effect of providing a secondary battery having improved charging efficiency and output due to low discharge resistance and having a long lifespan and excellent high-temperature capacity retention rate by suppressing increase in thickness.
    Type: Application
    Filed: June 12, 2023
    Publication date: January 25, 2024
    Inventors: Jong Cheol YUN, Min Goo KIM, Sang Ho LEE, Ji Seong HAN, Min Jung JANG
  • Publication number: 20230246233
    Abstract: The present invention relates to an electrolyte additive including a compound represented by Chemical Formula 1, an electrolyte including the electrolyte additive, and a secondary battery including the electrolyte. Chemical Formula 1: R1 and R2 are each independently an alkylene group having 1-5 carbon atoms; E1 is a bond, an alkylene group having 1-3 carbon atoms, or a cyclic carbonyl group, ether group, or ester group having 2-5 carbon atoms; R3 is a substituted or unsubstituted linear or cyclic carbonate group, carbonyl group, ether group, phosphate group, sulfonate group, or sulfate group having 2-5 carbon atoms; the substitution refers to substitution with one or more selected from F, Cl, Br, and I or an alkenyl group having 1-3 carbon atoms; E2 is a bond or a saturated or unsaturated alkylene group or ether group having 1-3 carbon atoms; and n is 0 or 1.
    Type: Application
    Filed: June 28, 2021
    Publication date: August 3, 2023
    Inventors: Ji Young CHOI, Min Goo KIM, Sang Ho LEE, Wan Chul KANG, Jong Chul YUN, Hyeong Kyu LIM, Ji Seong HAN, Min Jung JANG
  • Publication number: 20230178806
    Abstract: The present invention relates to an electrolyte additive including a compound containing a substituent represented by Chemical Formula 1, an electrolyte including the electrolyte additive, and a secondary battery including the electrolyte. Chemical Formula 1: In Chemical Formula 1, P and O are phosphorus and oxygen, respectively; A is a bond or oxygen; Q is oxygen or an unshared electron pair; R1, R2, R3, and R4 are each independently hydrogen, a linear or branched alkyl group having 1 to 10 carbon atoms, an alkenyl group, an alkynyl group, an alkoxy group, an alkoxycarbonyl group, an alkoxyalkyl group, a fluoroalkyl, or a cyclic sulfate; optionally, R1 or R2 is connected to R3 or R4 to form a double bond or a ring; n is an integer from 0 to 3; and * is a binding position.
    Type: Application
    Filed: June 28, 2021
    Publication date: June 8, 2023
    Inventors: Ji Young CHOI, Min Goo KIM, Sang Ho LEE, Wan Chul KANG, Jong Chul YUN, Hyeong Kyu LIM, Ji Seong HAN, Min Jung JANG
  • Publication number: 20220376299
    Abstract: The present invention relates to an electrolyte additive, a battery electrolyte including the electrolyte additive, and a secondary battery, and more particularly, to an electrolyte additive including a compound represented by Chemical Formula 1, an electrolyte including the electrolyte additive, and a secondary battery including the electrolyte. According to the present invention, due to low charging resistance, charging efficiency and output may be improved. In addition, the present invention has an effect of providing a secondary battery having a long lifespan and excellent capacity retention at high temperature.
    Type: Application
    Filed: June 26, 2020
    Publication date: November 24, 2022
    Inventors: Ji Young CHOI, Ji Seong HAN, Jong Chul YUN, Min Goo KIM, Min Jung JANG, Hyeong Kyu LIM, Wan Chul KANG, Sang Ho LEE
  • Patent number: 11024881
    Abstract: The present invention provides an electrolyte additive comprising a salt of an anion, derived from a nitrogen-atom-containing compound, with Cs+ or Rb+. Further, the present invention provides an electrolyte additive further comprising lithium difluoro bis(oxalato) phosphate. The present invention provides a non-aqueous electrolyte comprising a lithium salt, a non-aqueous organic solvent, and the electrolyte additive, and may provide a lithium secondary battery comprising: a cathode employing a cathode active material; an anode employing an anode active material; a separator interposed between the cathode and the anode; and the non-aqueous electrolyte.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: June 1, 2021
    Inventors: Jae Yoon Kim, Hyeong Kyu Lim, Jong Hyun Lee, Ji Seong Han
  • Patent number: 10770749
    Abstract: Provided is an electrolyte additive including a salt of an anion represented by Chemical Formula 1 below, with Cs+ or Rb+: wherein A is O or S, and R1 and R2 are each independently a C1-C10 alkyl group in which all or some of the hydrogen atoms are substituted with halogen atoms.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: September 8, 2020
    Inventors: Jae Yoon Kim, Min Goo Kim, Jong Hyun Lee, Ji Seong Han
  • Publication number: 20190207258
    Abstract: The present invention provides an electrolyte additive comprising a salt of an anion, derived from a nitrogen-atom-containing compound, with Cs+ or Rb+. Further, the present invention provides an electrolyte additive further comprising lithium difluoro bis(oxalato) phosphate. The present invention provides a non-aqueous electrolyte comprising a lithium salt, a non-aqueous organic solvent, and the electrolyte additive, and may provide a lithium secondary battery comprising: a cathode employing a cathode active material; an anode employing an anode active material; a separator interposed between the cathode and the anode; and the non-aqueous electrolyte.
    Type: Application
    Filed: March 6, 2019
    Publication date: July 4, 2019
    Inventors: Jae Yoon KIM, Hyeong Kyu LIM, Jong Hyun LEE, Ji Seong HAN
  • Publication number: 20190198924
    Abstract: The present invention may provide an electrolyte additive comprising a lithium compound for film formation and a salt of an anion, derived from a nitrogen-atom-containing compound, with Cs+ or Rb+. The present invention also provides a non-aqueous electrolyte comprising a lithium salt, a non-aqueous organic solvent, and the electrolyte additive, wherein the electrolyte additive may further comprise lithium difluoro bis oxalato phosphate, and may provide a lithium secondary battery comprising: a cathode employing a cathode active material; an anode employing an anode active material; a separator interposed between the cathode and the anode; and the non-aqueous electrolyte. A secondary battery comprising the electrolyte additive according to the present invention may have improved high-temperature output characteristics.
    Type: Application
    Filed: March 6, 2019
    Publication date: June 27, 2019
    Inventors: Jae Yoon KIM, Hyeong Kyu LIM, Jong Hyun LEE, Ji Seong HAN
  • Publication number: 20190131652
    Abstract: Provided is an electrolyte additive including a salt of an anion represented by Chemical Formula 1 below, with Cs+ or Rb+: wherein A is O or S, and R1 and R2 are each independently a C1-C10 alkyl group in which all or some of the hydrogen atoms are substituted with halogen atoms.
    Type: Application
    Filed: October 25, 2018
    Publication date: May 2, 2019
    Inventors: Jae Yoon KIM, Min Goo KIM, Jong Hyun LEE, Ji Seong HAN
  • Publication number: 20160104904
    Abstract: The present invention relates to a new structure of a fuel cartridge with light weight. The fuel cartridge of the present invention comprises a flexible container having an inner space to store liquid fuel, a connector connected to the flexible container and having an opening to discharge the liquid fuel; and a channel-forming structure or means provided in a inner space of the flexible container and connected to the connector, wherein the channel-forming structure or means is provided as a flow field interconnecting the inner space with an opening of the connector in order to discharge the liquid fuel when the channel-forming structure or means contacts with the flexible container near the connector. According to the present invention, coefficient of utilization of the fuel cartridge can be improved by preventing interference of a liquid fuel outflow due to close adhesion of the flexible container near the connector when the stored liquid fuel is discharged.
    Type: Application
    Filed: January 24, 2008
    Publication date: April 14, 2016
    Inventors: Ji-Seong Han, Han-Kyu Lee, Sung-Yong Cho, Sang-Jun Kong
  • Publication number: 20130122377
    Abstract: Provided are an electrolyte solution for lithium secondary battery, which includes dipentaerythritol hexaacrylate and a (meth)acrylate compound having a C4 to C12 linear or branched alkyl group as electrolyte additives, and a lithium secondary battery including the electrolyte solution. The electrolyte solution can improve the safety of the battery, and the performance characteristics, particularly cycle life characteristics, of the battery.
    Type: Application
    Filed: August 22, 2012
    Publication date: May 16, 2013
    Applicant: SOULBRAIN CO., LTD.
    Inventors: Soo Young KIM, Ji Seong HAN, Eun Gi SHIM, Ji Young CHOI, Wan Chul KANG
  • Publication number: 20120135314
    Abstract: Provided are an electrolyte additive represented by the following formula (1), an electrolyte solution containing the electrolyte additive, and a lithium secondary battery including the electrolyte solution: The electrolyte solution containing the electrolyte additive can enhance the normal-temperature and high-temperature lifetime characteristics of the battery to be equivalent or superior to the characteristics of conventional batteries, and can extend the service life of the battery.
    Type: Application
    Filed: November 28, 2011
    Publication date: May 31, 2012
    Applicant: SOULBRAIN CO., LTD
    Inventors: Eun Gi SHIM, Ji Seong Han, Ji Young Choi, Soo Young Kim, Hyeong Kyu Lim
  • Patent number: 8137850
    Abstract: Disclosed is a gas-liquid separator capable of allowing carbon dioxide to be exhausted to the atmosphere so as to recover and recycle only unreacted fuel discharged from an electric generator, and a fuel cell system having the same. The fuel cell system includes an electric generator to generate electricity by electrochemical reaction between hydrogen and oxygen, a fuel feeder to supply hydrogen containing fuel to the electric generator, an oxidant feeder to supply oxygen to the electric generator, and a recovering unit to recover unreacted fuel generated during the electrochemical reaction in the electric generator and supply the unreacted fuel to the fuel feeder. The recovering unit comprises a frame structure, and a gas-liquid separation film partially surrounding the frame structure. The gas-liquid separator forms a flow space inside the frame structure.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: March 20, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ji-Seong Han, Sung-Jin Kim
  • Patent number: 8133622
    Abstract: A fuel cell system is provided comprising: a reformer for generating hydrogen from hydrogen-containing fuel; and at least one electricity generator for generating electric energy through an electrochemical reaction of hydrogen and oxygen. The reformer includes a main body in which a plurality of reaction sections for generating hydrogen from hydrogen-containing fuel is integrally formed. A heating section is disposed in contact with the main body in order to supply different amounts of thermal energy to the plurality of reaction sections.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: March 13, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Zin Park, Ju-Yong Kim, Ji-Seong Han, Hyun-Jeong Lim, Eun-Suk Cho, Ho-Jin Kweon
  • Patent number: 8053119
    Abstract: There is provided a fuel cell system comprising: a stack for generating electric energy through a reaction between hydrogen and oxygen; a reformer for generating hydrogen from fuel through a catalytic reaction of the fuel using thermal energy and for supplying the generated hydrogen to the stack; a fuel supply unit for supplying the fuel to the reformer; and an oxygen supply unit for supplying oxygen to the reformer and the stack.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: November 8, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ju-Yong Kim, Hyun-Jeong Lim, Ji-Seong Han, Zin Park, Eun-Suk Cho
  • Patent number: 8043389
    Abstract: A fuel cell system includes a reformer for reforming fuel and generating hydrogen gas. A stack generates electricity through an electrochemical reaction between the hydrogen gas and oxygen. A fuel supply unit supplies fuel to the reformer. An air supply unit supplies air to the reformer and the stack. The reformer includes a reformation reactor unit for generating the hydrogen gas and a heat-insulating unit including a vacuum area covering the reformation reactor unit and recovering heat generated from the reformation unit.
    Type: Grant
    Filed: February 26, 2005
    Date of Patent: October 25, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ju-Yong Kim, Ji-Seong Han
  • Patent number: 7846594
    Abstract: There is provided a fuel cell system comprising: a reformer for generating a hydrogen gas stream from fuel through a catalytic chemical reaction using thermal energy; and a stack for generating electric energy through a reaction between the hydrogen gas stream and oxygen. The reformer includes: a first reaction section for generating thermal energy through an oxidation reaction of fuel during start-up of the fuel cell system; a second reaction section which communicates with the first reaction section and which generates the hydrogen gas stream from the fuel through a reforming reaction using the thermal energy; and a third reaction section which communicates with the first and second reaction sections, and which generates thermal energy through an oxidation reaction of carbon monoxide contained in the hydrogen gas stream, thereby reducing the concentration of carbon monoxide in the hydrogen gas stream.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: December 7, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ju-Yong Kim, Zin Park, Ji-Seong Han
  • Patent number: 7799449
    Abstract: A fuel cell system includes a reformer that includes a plurality of reaction sections for generating hydrogen from hydrogen-containing fuel; a plurality of heating sections which supply thermal energy to the plurality of heating sections and which have a catalyst; and a main body receiving the plurality of reaction sections and the plurality of heating sections. The respective heating sections generate different amounts of thermal energy for the reactions of the respective reaction sections.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: September 21, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Zin Park, Ju-Yong Kim, Hyun-Jeong Lim, Ji-Seong Han, Eun-Suk Cho, Ho-Jin Kweon
  • Patent number: 7763220
    Abstract: A fuel cell system includes: a reformer adapted to generate hydrogen from a fuel containing hydrogen through a chemical catalytic reaction using thermal energy; at least one electricity generator adapted to generate electric energy through an electrochemical reaction of hydrogen and oxygen; a fuel supply unit adapted to supply the fuel to the reformer; and an air supply unit adapted to supply oxygen to the reformer and the at least one electricity generator. The reformer includes a plurality of plates stacked with each other and forming at least one passage adapted to allow a fuel or a gas to flow therethrough and at least one catalyst layer coated on inner surfaces of the at least one passage. In the reformer, the at least one catalyst layer is formed to have a plurality of grooves extending substantially in a same direction as of the at least one passage.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: July 27, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Zin Park, Ju-Yong Kim, Hyun-Jeong Lim, Ji-Seong Han, Ho-Jin Kweon
  • Patent number: 7758987
    Abstract: A fuel cell system includes at least one electricity generating element to generate electrical energy through an electrochemical reaction of hydrogen and oxygen, and a reaction source supplier adapted to connect to the electricity generating element and to provide a hydrogen-containing fuel and oxygen-containing air to the electricity generating element. The reaction source supplier includes a first divided region for storing compressed air, a second divided region for storing the fuel, and a storage region having an elastic partition adapted to divide the adjacent first and second divided regions.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: July 20, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ju-Yong Kim, Hyun-Jeong Lim, Ji-Seong Han